A technique to validate the accuracy of a beam-type mechanical torque limiting device

Chandur P K Wadhwani; Richard T O'Brien; Paul S Rosen; Kwok-Hung Chung

doi:10.1016/j.prosdent.2019.12.019

A technique to validate the accuracy of a beam-type mechanical torque limiting device

J Prosthet Dent. 2020 Dec;124(6):647-652. doi: 10.1016/j.prosdent.2019.12.019. Epub 2020 Feb 11.

Authors

Chandur P K Wadhwani¹, Richard T O'Brien², Paul S Rosen³, Kwok-Hung Chung⁴

Affiliations

¹ Private practice, Prosthodontics, Bellevue, Wash; Affiliate Assistant Professor, Department of Restorative Dentistry, University of Washington School of Dentistry, Seattle, Wash. Electronic address: Cpkw@uw.edu.
² Retired Engineer, Seattle, Wash.
³ Private practice, Periodontology, Yardly, Pa; Clinical Professor, Department of Periodontics, University of Maryland School of Dentistry, Baltimore, Md.
⁴ Professor, Department of Restorative Dentistry, University of Washington School of Dentistry, Seattle, Wash.

PMID: 32057486
DOI: 10.1016/j.prosdent.2019.12.019

Abstract

Tightening torques are often specified in implant dentistry, including for surgical procedures, testing implant stability, and attaching prosthetic components when screws are used. The mechanical torque limiting devices (MTLDs) commonly used are typically either a toggle-type or beam-type. The International Organization for Standardization (ISO) 6789 recommends MTLDs should be periodically tested to confirm the validity of their readings, and, where necessary, recalibrated if possible or replaced. The verification of the toggle-type MLTD has been previously published. This article describes a straightforward, in-office technique to verify a beam-type MTLD.

MeSH terms

Dental Implants*
Stress, Mechanical
Torque

Substances

Dental Implants